Here is full explanation of pool table trick shot I posted other day | Planet of Hidden Secrets

Most people never see these-but feather strips are what hold your pool table cloth perfectly tight in the rails. 🎯 Over time, they dry out, warp, or lose grip- especially when the table’s been recovered a few times. When that happens, the cloth can start to loosen or wrinkle along the rails, and your rebound performance takes a hit. That’s why pros replace feather strips whenever they start to feel brittle or stop fitting snugly. Fresh strips mean a cleaner install, tighter cloth, and smoother